Handlebar assembly



FIG. 1 is a front perspective view of a handlebar assembly;

FIG. 2 is right side elevation view of the handlebar assembly of FIG. 1;

FIG. 3 is a left side elevation view of the handlebar assembly of FIG. 1;

FIG. 4 is a front elevation view of the handlebar assembly of FIG. 1;

FIG. 5 is a rear elevation view of the handlebar assembly of FIG. 1;

FIG. 6 is a top view of the handlebar assembly of FIG. 1; and,

FIG. 7 is a bottom view of the handlebar assembly of FIG. 1. 

I claim the ornamental design for a handlebar assembly, as shown and described. 